Skip main navigation

3 things to know about crown placement

What are the risks associated with Hall crowns? What do we need to look out for? This article covers all you need to inform patients.

Pre-formed metal crowns, like any procedure, come with risks.

You need to understand what these are so that you can plan and consent patients appropriately. This is a very safe treatment overall, so no need to scare patients!

1. Appearance

Probably the biggest disadvantage to pre-formed metal crowns is the appearance. There are techniques to make them look better (eg pre-veneered crowns), but these tend not to work.

Usually, we find it’s best to be upfront about this, make sure parents and children understand what they look like, explain that the evidence is good and that they will work well. Children are usually OK with them, so it’s the parents you need to convince.

Issues tend to arise when families aren’t shown the crowns before they are fitted, so the key here is taking good consent and recording that the appearance has been discussed. This is particularly important before treatment under general anaesthetic when often a lot of care is provided but the parent or guardian is not present at the time.

2. Managing a tooth that becomes non-vital after crown placement.

This is a risk with any restoration, and arguably it is probably less following crown placement. If it does happen, there is no reason why the tooth can’t be extracted or a pulpectomy be carried out through the crown.

Where this can get complicated is planning a child for treatment under general anaesthetic (GA) who has Hall crowns placed already. Do you leave them on? Take the teeth out? There is no absolute answer — it will depend on the extent of caries under these pre-existing crowns. You need to work out how you will assess that.

Either you will know (because you placed the Hall crown), or you can figure it out by taking x-rays, or by actually removing the Hall crowns under the GA.

3. First permanent molar impaction.

Sometimes first permanent molars become impacted on the second primary molar. This can happen with or without a crown on the second primary molar. If you think the crown might be obstructing the eruption of the first permanent molar, then remove it.

If you’d like to learn more about dentistry for non-specialists, check out the online course, from UCL, below.

This article is from the free online

Paediatric Dentistry for Non-Specialists

Created by
FutureLearn - Learning For Life

Our purpose is to transform access to education.

We offer a diverse selection of courses from leading universities and cultural institutions from around the world. These are delivered one step at a time, and are accessible on mobile, tablet and desktop, so you can fit learning around your life.

We believe learning should be an enjoyable, social experience, so our courses offer the opportunity to discuss what you’re learning with others as you go, helping you make fresh discoveries and form new ideas.
You can unlock new opportunities with unlimited access to hundreds of online short courses for a year by subscribing to our Unlimited package. Build your knowledge with top universities and organisations.

Learn more about how FutureLearn is transforming access to education